Bracket for supporting structural element to support structure

ABSTRACT

A bracket for supporting a structural element, such as a precast concrete beam, on a concrete pile or similar support structure in a building includes a first support part ( 1 ) which is cast at least partly into the concrete pile. The first support part ( 1 ) includes a bracket part ( 5 ) for supporting the structural element so that the structural element bears against the concrete pile. The bracket part ( 5 ) is movably fastened to the first support part ( 1 ), which is cast at least partly into the concrete pile, such that the position of the bracket part ( 5 ) with regard to the concrete pile can be changed.

FIELD OF THE INVENTION

The invention relates to a bracket for supporting a structural element,such as a precast concrete beam, on a concrete pile or a similar supportstructure of a building, the bracket comprising a first support partwhich is cast at least partly into the concrete pile, the first supportpart comprising a bracket part for supporting the structural element sothat the structural element bears against the concrete pile, the firstsupport part comprising threaded holes for bolts and the bracket partcomprising through-holes through which the bolts are driven, the bracketpart being movably fastened with the bolts to the first support part,which is cast at least partly into the concrete pile, such that theposition of the bracket part with regard to the concrete pile can bechanged.

A problem with some known brackets is that they do not comprise a properarrangement to allow for other adjustments than those made in thelongitudinal direction of the beam. As a result, errors in casting, forexample, cannot be corrected. A concrete pile is usually provided with afirst support part that is cast at least partly into the concrete pileand if the first support part is slanting or misplaced in the concretepile, for example when one end of the precast concrete beam is beingmounted to the concrete pile, such errors cannot be corrected.

A solution to this problem has been proposed in FI 960094 which teachesa bracket part the position of which can be changed in the verticaldirection with regard to a first support part cast into a pile or thelike. A problem with this known solution, however, is that it onlyenables vertical adjustment.

BRIEF DESCRIPTION OF THE INVENTION

It is therefore an object of the invention to provide a bracket thatsolves the above problems.

The object of the invention is achieved by a bracket characterized inthat the inner diameter of the through-holes is greater than the outerdiameter of the bolts such that when the bolts have been screwed to thethreaded holes, the bracket part can be moved with regard to the firstsupport part.

The preferred embodiments of the invention are disclosed in thedependent claims.

An underlying idea of the invention is that the bracket part is movablyarranged to the first support part to be cast into the concrete pile.This enables the bracket part to be moved with regard to the concretepile at the construction site when one end of the concrete beam ismounted onto the bracket part, thereby enabling errors, if any, incasting and in the position of the concrete pile to be corrected at theconstruction site.

An advantage of the bracket of the invention is that greater precisionis achieved in the mounting of a construction unit with regard to theconcrete pile.

Since the inner diameter of the through-holes in the bracket part isgreater than the outer diameter of the bolts in the holes, the solutionof the invention allows a two-dimensional movement to take place, i.e.with the bolts screwed through the holes in the bracket part and screwedto the threaded holes in the first support part, the bracket part can bemoved both in horizontal and vertical directions with regard to theconcrete pile and the first support part cast at least partly into thepile.

Since the inner diameter of the through-holes in the bracket part isgreater than the outer diameter of the bolts in the holes, the solutionof the invention also allows the angle between the bracket part and theconcrete pile to be adjusted, if necessary.

A bracket part in a first preferred embodiment of the bracket of theinvention comprises a first preformed surface, which is arranged toco-operate with a second preformed surface of the first support part.Through the first and second preformed surfaces, the vertical forcecomponent caused by the concrete beam to the bracket part is preferablytransferred to the concrete pile.

Further, a preferred embodiment of the bracket of the inventioncomprises adjustment means for adjusting the structural element and forfastening it immovably with regard to the bracket part. This solutionallows torsion originating from the beam to be transferred to theconcrete pile.

In a preferred embodiment of the bracket of the invention, the firstsupport part comprises a stopper that is arranged to secure thestructural element to the bracket part. This stopper is arranged toreceive the horizontal forces caused by the concrete beam to the firstsupport part.

BRIEF DESCRIPTION OF THE DRAWINGS

In the following, the invention will be described in greater detail withreference to the preferred embodiments and the accompanying drawings, inwhich

FIG. 1 shows a disassembled bracket;

FIG. 2 shows a disassembled bracket;

FIG. 3 is a side view of the bracket;

FIG. 4 is a view of the bracket as seen from the structural element; and

FIG. 5 is a top view of the bracket.

DETAILED DESCRIPTION OF THE INVENTION

The Figures show a bracket for supporting a structural element, such asa concrete beam, on a support structure in a building. The structuralelement may also be made of some other material than concrete, such assteel.

The bracket comprises a first support part 1 which is meant to be castat least partly into the support structure as shown in FIG. 3. In theFigures the first support part 1 is a rectangular plate part.

The first support part 1 shown in the Figures is provided with bonds 2and 3 fastened thereto for anchoring the first support part 1 to thesupport structure. In the Figures the bonds are deformed steel bars 2and headed pins 3. The deformed steel bars 2 are arranged in a slantingposition such that the continuations (not shown) of the centre lines ofthe deformed steel bars 2 intersect outside the support structure. Thispreferred positioning of the deformed steel bars 2 allows the straincaused by the eccentricity of shear force to be reduced.

The bracket shown in the Figures further comprises a second support part4 which is meant to be cast at least partly into the structural element.It is also possible that the structural element is shaped, i.e. cast,such that it can be supported on the first support part 1. For example,the structural element may comprise a recess (not shown).

The first support part 1 comprises a bracket part 5 on which thestructural element can be supported such that the structural elementbears against the support structure. The structural element shown in theFigures is supported on the bracket part 5 through the second supportpart 4 cast into the structural element. Apart from the bracket part 5,the first support part 1 of the Figures is to be cast substantiallyentirely into the support structure. The first support part 1 of theFigures is to be cast into the support structure to form part of theouter surface of the support structure. The portion of the first supportpart 1 remaining outside the support structure may be protected byshrink plastic, for example, for the duration of the casting.

The bracket part 5 is movably arranged to the first support part 1 suchthat the position of the bracket part 5 with regard to the supportstructure may be changed.

In the Figures the bracket part 5 is detachably fastened to the firstsupport part 1 with bolts 6. The first support part 1 comprises threadedholes 7 and the bracket part 5 through-holes 8 for the bolts 6. Thethreaded holes 7 of the first support part 1 may also be useful when thefirst support part 1 is to be cast into the support structure, forexample, in that the first support part 1 can be fastened to the mouldwith bolts through the threaded holes 7.

The diameter of the through-holes 8 in the bracket part 5 is greaterthan the outer diameter of the bolts 6 to allow the bracket part 5 to bemoved with respect to the first support part 1 when the bolts 6 havebeen screwed into the threaded holes 7. Instead of being round, thethrough-holes 8 may be made in some other shape that allows the bracketpart 5 to be moved with respect to the first support part 1 when thebolts 6 have been screwed into the threaded holes 7.

In the Figures the bracket part 5 comprises a first preformed surface 9arranged to co-operate with a second preformed surface 10 of the firstsupport part 1. The first support part 1 is meant to be cast into thesupport structure such that the second preformed surface 10 forms partof the outer surface of the support structure. The first preformedsurface 9 and the second preformed surface 10 are meant to transfer theforces caused by the structural element to the bracket part 5 throughthe first support part 1 further to the support structure. In theFigures the first preformed surface 9 is grooved, the second preformedsurface 10 being provided with corresponding grooves.

The second support part 4 shown in the Figures comprises a support platepart 11 arranged to bear against the bracket part 5 when the structuralelement is supported on the support structure. The support plate part 11comprises a recess 12 for the bracket part 5. The recess 12 ispreferably dimensioned and shaped to allow the bracket part 5 placed inthe recess 12 to move therein. This enables the moving of the structuralelement supported by the bracket part 5.

The support plate part 11 and the bracket part 5 comprise matingsurfaces, which are at least partly curved. Consequently, structuraltwisting and torsion, for example, do not cause a point load, but theload is evenly distributed on the entire surface.

The support plate part 11 preferably comprises adjustment means foradjusting the structural element and for fastening it substantiallyimmovably with respect to the bracket part 5 and thereby the supportstructure. In the Figures these adjustment means comprise adjustmentbolts 19 mounted into threaded sleeves 20, the bolts setting themselveson opposite sides of the bracket parts 5 where they are tightened. Sincethe recess 12 shown in the Figures is dimensioned and shaped to allowthe bracket part 5 placed in the recess 12 to move therein, thestructural element can be moved with respect to the support structure bytightening and loosening the adjustment bolts 19. If the bracket part 5is slanting, a support structure can thus be straightened by winding,for example. Moreover, the adjustment bolts 19 prevent the supportstructure from turning about its longitudinal axis.

The second support part 4 shown in the Figures further comprises acasing part 15 for providing a recess 16 in the structural element. Thesupport plate part 11 is fastened to the casing part 15 to form a partof the casing part 15 serving as the recess 16.

If the structural element is made of steel, the support plate part 11may be fastened to the structural element by welding, for example, or itmay be a part formed to the structural element 11.

The first support part 1 preferably comprises a stopper 17 arranged tosecure the structural element on the bracket part 5. The stopper 17 isalso meant to transfer horizontal forces acting in the structure.

When seen from the direction of the support structure, the stopper 17shown in the Figures is arranged to set behind the support plate part 11belonging to the second support part 4.

The stopper 17 of the Figures is a separate part attached with bolts 6to the bracket part 5, the same bolts being used for fastening thestopper 17 and the bracket part 5 to the first support part 1. To allowthe stopper 17 to be made as thin as possible and the load acting on thebolts 6 as small as possible, the force in the brackets shown in theFigures may be transferred by means of a lug 18 provided on the side ofthe stopper 17.

It is apparent to a person skilled in the art that as technologyadvances the basic idea of the invention may be implemented in variousways. The invention and its embodiments are therefore not restricted tothe above examples, but they may vary within the scope of the claims.

1. A bracket for supporting a structural element on a support structureof a building, the bracket comprising: a first support part which iscast at least partly into the support structure; a bracket part forsupporting the structural element so that the structural elementsupported on the bracket part bears against the support structure; thefirst support part comprising threaded holes for bolts and the bracketpart comprising through-holes through which the bolts are driven; thebracket part being movably fastened with the bolts to the first supportpart, which is cast at least partly into the support structure, suchthat the position of the bracket part with regard to the supportstructure can be changed, wherein the inner diameter of thethrough-holes is greater than the outer diameter of the bolts such thatwhen the bolts have been screwed into the threaded holes, the bracketpart can be moved with regard to the first support part, wherein thebracket part comprises a first preformed surface which is arranged toco-operate with a second preformed surface of the first support part,wherein said bracket further comprises a support plate part arranged tobear against the bracket part when the structural element is supportedon the support structure, and wherein the support plate part comprises arecess for the bracket part.
 2. A bracket for supporting a structuralelement on an upwardly extended support structure of a building, thebracket comprising: a first support part which is cast at least partlyinto the support structure; a bracket part having an upwardly facingsurface for supporting the structural element so that the structuralelement supported on the upwardly facing surface of the bracket partbears against the support structure; and a support plate part arrangedto bear against the bracket part when the structural element issupported on the support structure, the first support part comprisingthreaded holes for bolts and the bracket part comprising through-holesthrough which the bolts are driven, the bracket part being movablyfastened with the bolts to the first support part, which is cast atleast partly into the support structure, such that the position of thebracket part with regard to the support structure can be changed,wherein the inner diameter of the through-holes is greater than theouter diameter of the bolts such that when the bolts have been screwedinto the threaded holes, the bracket part can be moved with regard tothe first support part, and wherein the support plate part comprisesadjustment means for adjusting the structural element and for fasteningit substantially immovably with regard to the bracket part.
 3. A bracketfor supporting a structural element on an upwardly extended supportstructure of a building, the bracket comprising: a first support partwhich is cast at least partly into the support structure; a bracket parthaving an upwardly facing surface for supporting the structural elementso that the structural element supported on the upwardly facing surfaceof the bracket part bears against the support structure; and a supportplate part arranged to bear against the bracket part when the structuralelement is supported on the support structure; the first support partcomprising threaded holes for bolts and the bracket part comprisingthrough-holes through which the bolts are driven, the bracket part beingmovably fastened with the bolts to the first support part, which is castat least partly into the support structure, such that the position ofthe bracket part with regard to the support structure can be changed,wherein the inner diameter of the through-holes is greater than theouter diameter of the bolts such that when the bolts have been screwedinto the threaded holes, the bracket part can be moved with regard tothe first support part, wherein the bracket part comprises a firstpreformed surface which is arranged to co-operate with a secondpreformed surface of the first support part, wherein the support platepart comprises adjustment means for adjusting the structural element andfor fastening it substantially immovably with regard to the bracketpart.